Birds of the Land of Swallows: contribution of the main ecosystems of Cozumel Island to its avian diversity

Figures & data

Figure 1. Study area and survey sites on Cozumel Island indicating point-count distribution in each ecosystem type.

Table 1. Bird species recorded in Cozumel Island, ordered in agreement with the AOS Checklist of North and Middle American Birds (Chesser et al. 2020). Conservation status: NOM = SEMARNAT (2010, 2019 update); IUCN = IUCN (2019); Pr = Subject to special protection; A = Threatened; NT = Near threatened. Endemism: EN = Endemic, QE = Quasi-endemic, SE = Semi-endemic (Berlanga et al. 2019)

Bird species	Ecosystem				Conservation status		Endemism
	Tropical forest	Mangrove	Palm thicket	Urban	NOM	IUCN
Columba livia				•
Patagioenas leucocephala		•			A	NT
Streptopelia decaocto				•
Columbina talpacoti	•		•	•
Leptotila jamaicensis	•		•				QE
Zenaida asiatica				•
Zenaida aurita			•		Pr
Crotophaga sulcirostris	•
Coccyzus americanus	•
Chordeiles acutipennis	•	•
Chaetura pelagica	•		•			NT
Anthracothorax prevostii	•		•	•
Cynanthus forficatus	•		•	•			EN
Charadrius wilsonia		•
Calidris minutilla		•
Tringa semipalmata		•
Ardea herodias		•
Egretta tricolor		•
Egretta rufescens		•			A	NT
Butorides virescens		•
Nyctanassa violacea		•
Eudocimus albus		•
Coragyps atratus			•
Pandion haliaetus		•
Chloroceryle americana		•
Melanerpes pygmaeus	•						QE
Melanerpes aurifrons	•
Elaenia martinica	•						QE
Elaenia flavogaster	•
Myiarchus tuberculifer	•		•
Tyrannus melancholicus		•	•	•
Vireo bairdi	•				A		EN
Vireo philadelphicus	•	•
Vireo magister	•						QE
Hirundo rustica			•
Petrochelidon pyrrhonota			•
Troglodytes aedon	•			•
Polioptila caerulea	•
Melanoptila glabrirostris	•		•		Pr	NT	QE
Mimus gilvus	•		•	•
Spindalis zena			•
Icterus spurius			•	•
Icterus cucullatus			•				SE
Quiscalus mexicanus		•	•	•
Parkesia noveboracensis		•
Setophaga petechia	•	•	•	•
Piranga roseogularis	•						QE
Cardinalis cardinalis	•		•
Coereba flaveola	•		•
Tiaris olivaceus	•		•

Figure 2. Rarefied bird species richness (mean ± 84% confidence intervals) of the studied ecosystems on Cozumel Island. Letters above error bars represent statistical differences between forests, mangroves, palm thickets, and urban settings.

Figure 3. Estimated avian density (mean ± 84% confidence intervals) of the four studied ecosystems on Cozumel Island. Letters above error bars represent statistical differences. The scale-break in the y-axis is used for visual purposes.

Figure 4. Bray–Curtis multivariate analysis showing bird community composition similarity in the four studied ecosystems on Cozumel Island.

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